I have a soft spot for Legnanos (2 in my inventory) since they lead me down the rabbit hole of vintage stuff. Both of mine are ~1960 so a very different situation.
A 70’s era bike made of 531 with a slathering of Campy is a great recipe but the Universal 61s seem out of place. Tubulars are generally a minus in the market.
As others have stated, the vintage bike market is very weak right now. I like barn finds especially if they are original. To me, $400 max since there is a lot of work to be done and wear items are in unknown condition. Also, very much a niche market for bikes like this and most of those people are on this forum.